干旱区生态环境知识资源中心(Arid): Sedimentological analysis and reservoir quality of the early Cenomanian transgressive sandstones, northern Western desert, Egypt

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DOI	10.1016/j.petrol.2020.107948
	Sedimentological analysis and reservoir quality of the early Cenomanian transgressive sandstones, northern Western desert, Egypt
	Selim, S. S.; Wafdy, R.; Abu Khadrah, A. M.
通讯作者	Selim, SS (corresponding author), Cairo Univ, Fac Sci, Dept Geol, Cairo 12613, Egypt. ; Wafdy, R (corresponding author), Khalda Petr Co, Dept Explorat, Cairo, Egypt.
来源期刊	JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
ISSN	0920-4105
EISSN	1873-4715
出版年	2021
卷号	197
英文摘要	Depicting depositional models of transgressive sandstone reservoirs is challenging due to their internal complexity and limited case studies. This study presents an example for transgressive sandstone reservoirs from the Bahariya Formation at Hayat-Yasser oil field, Shushan Basin (northern Western Desert, Egypt). The upper part of the Bahariya Formation accumulated in an estuarine setting as a consequence of a successive sea level rise. Detailed reservoir characterization, employing sequence stratigraphic and sedimentological approaches, revealed that the studied reservoir consists of a mixed siliciclastic-carbonate transgressive estuarine-shelf succession. Four conventional core samples of this succession at Khalda ridge (Shushan Basin), permit the analysis of their sedimentology and internal architecture (mesoscopic heterogeneities) along correlation lines parallel or slightly oblique to depositional dip. The succession consists of six backstepping parasequence sets that record the overall shift from tidal-dominated to wave-dominated estuaries/bays. The transgressive component of the parasequences sets includes bay mudstones, flood-tidal deltas, and shoreface/barrier deposits; while the regressive component includes estuarine point bars, bay head deltas, and tidal deltas. The reservoir properties show significant variation according to the facies assemblages. The tidally-dominated estuarine channels show low net-togross, as it is characterized by lenticular sandstone bodies with several lateral and vertical baffles and barriers. On the other hand, the shoreface/barrier and tidal delta sandstones show high net-to-gross and consist of amalgamated sandstone bodies with little mud barriers or baffles. Petrographically, the upper Bahariya reservoir includes intergranular and secondary porosities. The microscopic heterogeneities are mainly due to the fine grain nature, poor sorting, presence of matrix, and continuous mud barriers or baffles. Destruction of porosity, affecting the reservoir quality, occurred by silica overgrowths, ferroan calcite, grain coating chlorite, and kaolinite cementation, as well as compaction. Feldspar dissolution is the main diagenetic process responsible for the formation of secondary porosity, enhancing the reservoir quality.
英文关键词	Facies analysis Bay-head delta Reservoir heterogeneity Reservoir quality Transgressive sandstones Shushan basin Northern western desert of Egypt
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000604415500012
WOS关键词	INCLINED HETEROLITHIC STRATIFICATION ; RESOLUTION SEQUENCE STRATIGRAPHY ; CRETACEOUS MCMURRAY FORMATION ; BAHARIYA FORMATION ; SHORELINE TRAJECTORIES ; DEPOSITIONAL SYSTEMS ; FACIES ARCHITECTURE ; ESTUARINE DEPOSITS ; SEDIMENTARY MODEL ; SHALLOW-MARINE
WOS类目	Energy & Fuels ; Engineering, Petroleum
WOS研究方向	Energy & Fuels ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348028
作者单位	[Selim, S. S.; Abu Khadrah, A. M.] Cairo Univ, Fac Sci, Dept Geol, Cairo 12613, Egypt; [Wafdy, R.] Khalda Petr Co, Dept Explorat, Cairo, Egypt
推荐引用方式 GB/T 7714	Selim, S. S.,Wafdy, R.,Abu Khadrah, A. M.. Sedimentological analysis and reservoir quality of the early Cenomanian transgressive sandstones, northern Western desert, Egypt[J],2021,197.
APA	Selim, S. S.,Wafdy, R.,&Abu Khadrah, A. M..(2021).Sedimentological analysis and reservoir quality of the early Cenomanian transgressive sandstones, northern Western desert, Egypt.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,197.
MLA	Selim, S. S.,et al."Sedimentological analysis and reservoir quality of the early Cenomanian transgressive sandstones, northern Western desert, Egypt".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 197(2021).